Load isolated iron species/polymer porous fenton catalytic membrane, its preparation method and application
A polymer, catalytic membrane technology, applied in catalyst activation/preparation, physical/chemical process catalyst, organic compound/hydride/coordination complex catalyst, etc., can solve the problem of membrane fouling restricting membrane, etc., and achieve a simple preparation method , Avoid membrane fouling, and solve the effect of not easy continuous recycling
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[0031] The embodiment of the present invention provides a kind of preparation method of loading isolated iron species / polymer porous Fenton catalytic membrane, comprises the following steps:
[0032] S1: Add the dry isolated iron species Fenton catalyst and the pore-forming additive into the solvent and ultrasonically disperse to obtain the dispersion liquid of the isolated iron species Fenton catalyst.
[0033] S2: The polymer is added in the dispersion liquid of the isolated iron species Fenton catalyst, fully stirred, and left to stand for degassing to obtain the isolated iron species Fenton catalyst / polymer solution;
[0034]S3: Using the isolated iron species Fenton catalyst / polymer solution as the casting solution, the immersion precipitation phase inversion method was used to prepare the isolated iron species / polymer porous Fenton catalytic membrane.
[0035] The method provided in this example uses the isolated iron species Fenton catalyst / polymer solution as the casti...
Embodiment 1
[0053] First prepare 500 mL of 2000 mg / L ferric chloride solution, then add 10 g of 4A zeolite into it, shake in an air bath shaker for 3 hours, vacuum filter, and freeze-dry to obtain isolated iron species Fenton catalyst.
[0054] Weigh 0.32g of dry isolated iron species catalyst and 12g of polyethylene glycol-400, add to 29.68g of N,N-dimethylacetamide solution, and ultrasonically disperse for 0.5h. Add 8 g of polyethersulfone to the above isolated iron species solution, stir for 12 h, and ultrasonically degas for 0.5 h to obtain the isolated iron species / polyethersulfone casting solution, wherein the mass ratio of the isolated iron species catalyst to polyethersulfone is 4:100 . The isolated iron species / polyethersulfone porous Fenton catalytic membrane was prepared by immersion precipitation phase inversion method, in which the relative humidity of the environment was 90%, the residence time in air was 60s, and the temperature of the coagulation bath was 48°C.
[0055] P...
Embodiment 2
[0057] The preparation method of the isolated iron species / polyethersulfone porous Fenton catalytic membrane is the same as in Example 1, except that the mass ratio of the isolated iron species catalyst to polyethersulfone is 6:100.
[0058] The method for catalyzing the degradation of phenol by the isolated iron species / polyethersulfone porous Fenton catalytic membrane is the same as in Example 1, except that the pH of the solution is 6.
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